Daddario PW-CT-26 Rechargable USB Tuner

This is a convenient piece of tech, especially with the USB C charger (the pictures show a micro USB, but mine came with the latest USB C port, which is better).
It's great for quick tuning when practicing at home.
But I'm not sure how accurate the tuning is, which makes it not ideal for live use.
I compared it to my pedalboard tuner, which is very accurate and when tuning using the pedalboard tuner, the clip-on was saying all notes are flat and when I tuned using the clip-on tuner, all my open notes were sharp according to my pedalboard tuner, especially the low E.

Maybe the one I received has some accuracy issues, but I'm not sure if it's just this product in general. It's only by a few cents, but it's enough to make me weary when tuning using just the clip-on tuner live.
But it's OK for home use.